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When to use volatile with multi threading?
...variable then many tutorials say make the variable volatile to prevent the compiler caching the variable in a register and it thus not getting updated correctly.
However two threads both accessing a shared variable is something which calls for protection via a mutex isn't it?
But in that case, betw...
What is referential transparency?
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91
A referentially transparent function is one which only depends on its input.
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How does this giant regex work?
...1E/zoZ6mdA2OGX4Th9Y8+ICp8gN+KVAiPNLy2EFmGAxfD0HUN+dlilpvXEJ0yGzN2ze3IisRu+ywwwSEcTxPQdmODXZYz9bb70oZi+90O3HQXhrsXaHWdAMVpVPjo+sA286YB7O9LXZeAZPrD8PQxgEDMEkPNuI2MaCbfQS0BSKH/vBdOiNflwNiw6dIDodBwvmQEdfuwwApi7vc55/6sYwb8ds3ZmmcsBkOYW5m8FidO313QSe0USfQH8ACMDfhyUj1qBwFUuh7AcTmCzcUIO69twFQkGj7p68Z2fIlzzVC...
What is the copy-and-swap idiom?
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Tony DelroyTony Delroy
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Getting the closest string match
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91
This problem turns up all the time in bioinformatics. The accepted answer above (which was grea...
Efficiently replace all accented characters in a string?
... "o", "ü": "u",
"Ä": "A", "Ö": "O", "Ü": "U" // probably more to come
};
return ( s.replace(makeSortString.translate_re, function(match) {
return translate[match];
}) );
}
This will obviously make the regex a property of the function itself. The only thing you may not like ab...
Nginx no-www to www and www to no-www
...listen 80;
server_name example.com;
return 301 http://www.example.com$request_uri;
}
server {
listen 80;
server_name www.example.com;
...
}
HTTPS Solution
For those who want a solution including https://...
server {
listen 80;
server_name ...
What is a good regular expression to match a URL? [duplicate]
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Regex if you want to ensure URL starts with HTTP/HTTPS:
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
If you do not require HTTP protocol:
[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)
To...
apache redirect from non www to www
I have a website that doesn't seem to redirect from non-www to www.
24 Answers
24
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Generic htaccess redirect www to non-www
I would like to redirect www.example.com to example.com . The following htaccess code makes this happen:
24 Answers
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